Freelancer profile translated to English.
Back to original languageAbout Théo
Hi, I'm Théo, a fullstack web developer!
🌟 With a strong appetite forbackend development**, I specialize in **Java Spring Bootand **Node.js**. I also have solid experience in frontend and mobile with **React**, **ReactNative**, or **Vue**, which allows me to offer complete, tailor-made, and efficient web solutions.
I amCII approved**, which could allow you to benefit from a **tax creditfor expenses incurred if you are eligible!
⚙️ Backend Stack
- **Java (Spring Boot, Spring Batch)**, **Node.js (Nest.js, Express.js)**: Development of robust and scalable applications, ETL Batch.
-REST APIand **GraphQL**: Design and integration of modern API services.
- **Kafka**: Management and processing of real-time data streams (producer, consumer, topics, ...).
🛢Databases
- Data modeling and optimization.
- Security and performance improvement.
🎨 Frontend and Mobile Stack
- **React.js (Next.js), ReactNative (Expo), Vue.js, Redux**: Creation of dynamic and responsive user interfaces.
- **HTML5, CSS3, TypeScript**: Development of ergonomic and efficient web and mobile applications.
📦 Deployment and Integration:
- **Docker**: Application containerization to ensure portability and scalability.
- Deployment: On VM (via **Ansible**) or Kubernetes Pods (**Helm Charts**) with management and job launching. Or more simply on **Heroku**.
- **AWS**: Cloud hosting, EC2 and S3 bucket service management.
Other:
-Keycloak**, **Stripe**, **Resend**, **SendGrid, OpenAI API
I can support you on your entire solution, from A to Z, or intervene in a targeted and rapid manner to resolve specific points or unblock complex situations.
French
Native or bilingual
English
Fluent
Can work on-site
Paris (up to 50km), Montpellier (up to 50km), Nancy (up to 50km), Metz (up to 50km), Lyon (up to 50km)
Experience
- ENERGY DEVFullstack Developer (Node, Python, React)REAL ESTATEJune 2025 - Today (1 year and 2 months)Paris, FranceBackendandfrontend developmentwith maintenance of a SaaS in real estate for energy performance diagnosis optimization:- Development of a backend API in **NodeJs**, **PostgreSQL**, payment via **Stripe**, authentication via cookie...- Implementation of a powerfulPythoncalculation engine (**algorithms** Dijkstra, Quicksort, ...) to offer consistent optimizations to users for their work based on their criteria.- Creation of an administrator interface inNextJsandTypescriptto manage the application securely.- Deployment onAWSwith setup of Healthchecks, backups, lambda functions...
- WoFCTOVIDEO GAMES AND ANIMATIONJuly 2024 - Today (2 years and 1 month)Paris 12 Reuilly, FranceWOF Arena - WOF RPG (Soon) - Mobile Games (C# / Unity), product and technical vision:-Team Leadership**: coordination of freelancers on design, animations, and assets, with **scopingof specs and production monitoring.- Technical Core: design of gamealgorithms(gameplay, combat/progression systems), **data security**, **horizontal scaling**.- 4K daily users, +100K registrations, +50K revenue
- AtosWeb Development EngineerDIGITAL AND ITSeptember 2022 - December 2024 (2 years and 3 months)Montpellier, FranceDevelopment and implementation of new features, ensuring client vision and requirements are met.
- Frontend development in clean architecture with **VueJS, Pinia, TypeScript**.
- Development of various backend microservices, ETL batches, and data buses for inter-service communication with **SpringBoot, SpringBatch, Kafka**.
- Implementation of database migrations with backup plans (**ElasticSearch** andPostgreSQL**), and migration of **Java (11 to 17, 21)andSpringBoot (2 to 3)versions.
- Deployment of fixes and new features on different environments,Kubernetes (Helm)pods, or **VMs (Ansible)**.
Reviews
A
Alexandre
ENERGY DEV
Reviewed on 6/18/2025
Théo perfectly understood the challenges from the start, which facilitated communication and saved us valuable time.
His adaptability, both technically and in managing priorities, was particularly appreciated.
Leah
Step
Reviewed on 5/20/2025
Théo was responsive, rigorous, and proactive throughout the mission! He immediately grasped the needs and constraints, and delivered quality work. I was particularly impressed by his efficiency. I highly recommend him and look forward to collaborating with him again.
Recommendations
FU
HA
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Education
- Engineering degree, Computer Science and ManagementPolytech Montpellier2023Diplôme d'ingénieur, Informatique et Gestion
- Computer Engineering (Erasmus)University of Linköping2022Ingénierie informatique